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Kyle E. LaPlant, Gregory Vogel, Ella Reeves, Christine D. Smart, and Michael Mazourek

creeks, rivers, and ponds, which then transport the pathogen long distances and lead to new epidemics ( Hausbeck and Lamour, 2004 ; Jones et al., 2014 ). Control of phytophthora crown and root rot remains a challenge for squash and pumpkin producers

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Sangho Jeon, Charles S. Krasnow, Gemini D. Bhalsod, Blair R. Harlan, Mary K. Hausbeck, Steven I. Safferman, and Wei Zhang

, 2013 ; Stanghellini et al., 1996a , 1996b ). Pythium root rot causes plant stunting, wilt, and death and can also reduce horticultural quality of infected crops ( Tompkins and Middleton, 1950 ). The pathogen can become established in a greenhouse

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Charles S. Krasnow, Rachel P. Naegele, and Mary K. Hausbeck

on squash and pumpkin fruit can develop make growers vulnerable. Specifically, in Michigan, fruit rot of processing cucurbits can be a major issue ( Hausbeck and Lamour, 2004 ; Meyer and Hausbeck, 2012 ) as well as crown and root rots of squash and

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Chrislyn Ann Particka and James F. Hancock

Black root rot (BRR) is a widespread disease of strawberry that causes the death of feeder roots and the degradation of structural roots resulting in an overall decrease in productivity ( Maas, 1998 ). By the 1950s, BRR had been reported in many

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Johanna Del Castillo Múnera and Mary K. Hausbeck

harzianum and S. lydicus that have been demonstrated to give Pythium root rot control ( Daughtrey and Benson, 2005 ; Harman, 2000 ; Little et al., 2003 ; Moorman and Kim, 2004 ). Choosing cultivars based on pathogen resistance is not a common control

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David R. Bryla and Robert G. Linderman

; however, in clay soil, the pathogen was equally infective at 0 to −25 kPa. Irrigation, by definition, increases soil moisture, potentially increasing pathogen activity and promoting development of root rot and other diseases ( Rotem and Palti, 1969

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E. Barclay Poling

-off” bare-root transplants) had to be destroyed. North Carolina. In the same year (2003), this pathogen was highly destructive in plug plant propagation beds and greenhouses across the state of North Carolina, as well as in Virginia, South Carolina

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John R. Yeo, Jerry E. Weiland, Dan M. Sullivan, and David R. Bryla

Phytophthora cinnamomi Rands is a soilborne pathogen that causes root rot in >900 plant species worldwide, including northern highbush blueberry ( Zentmyer, 1980 ). Currently, there are two groups of fungicides (phenylamides and phosphonates

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Rick D. Peters, Tharcisse Barasubiye, and Joanne Driscoll

lesions was shrunken and often wrinkled. Sectioning the root through the lesion revealed an internal advancing dry rot, with an irregular border and cavities that contained white mycelium ( Fig. 1B ). Fig. 1. ( A ) External symptoms of dry rot of

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Ariadna Monroy-Barbosa and Paul W. Bosland

New Mexico ( Leonian, 1922 ). This pathogen can completely devastate a field of chile peppers ( Sanogo and Carpenter, 2006 ). The pathogen causes multiple disease syndromes such as phytophthora root rot, fruit rot, stem blight, and foliar blight ( Sy